Clamping member for sole-rounding machines



.A. LABRIE Apri! 22, 1930.

CLAMPNG MEMBER FOR SOLE ROUNDTNG MACHINES Filed Feb. 13 1929 Patented pr. 22, 1930 UNITED STATES PATENT OFFICE ANT'HONY LABRIE, OF HAVERHILL, MASSACHUSETTS CLAMPING MEMBER FOB SOLE-ROUNDIN MACHINES Application filed February 13, 1929. Serial No. :339,612.

This invention relates to the pattern and sole clamping means which is employed in the common type of sole rounding machine, of which the so-called planet is an example, in which the sole and pattern. the latter usually being of wood, is clamped between somewhat similarly shaped metal patterns of somewhat smaller size, and a knife travels about the same to round out the sole,

In the manufacture of shoes in which a tongue is split from the grain side of the sole, from its heel end into the shank, and later is turned up against the heel breast to cover the breast' surface, it has been necessary, with the type of sole-clamping means which have been employed, in trimming the heel portion of the sole, to trim the tongue to the shape to which the heel seat portion of the sole is trimmed, whether the tongue is split off before or after the rounding operation is performed, so that the width of the tongue, at the point where the breast edge meets the sole, is the same as the width of said breast edge. -As a result the tongue is usually of insuflicient width to cover the heel breast at this point, so that not only is great care necessary in adhesively connecting thetongue to the heel breast, so that the entire breast surface may be completely cov. ered, but in many instances the tongue is not of sufiicient width to cover the entire surface, and if the heel should happen to be Secured slightly to one side'of its correct position on the heel seat, the uncovered space will be increased, with correspondingly increased unsatisfactory results.

The object of my invention is to provide a form of clamping means for rounding ma chines of the general type above referred to, which will enable the tongue to be split from the sole before the sole is rounded, and the rounding operation to be then performed without 'educing the width of the tongue,

so that the latter will be of substantially greater Width than the heel breast at all points and of ample width to cover the same completely, even if the heel should be somewhat misplaced, thereby enabling the operation of adhesively connecting the tongue to the heel breast to be facilitated and improved results to be secured.

I accomplish this object by providing the rounding machine 'with a form of clamping means which will enable the sole to be effectively clamped, and rounded after the tongue has been split oti', and without having the tongue engaged by the knife of the rounding machine.

For a more complete disclosure of my invention and of the preferred specific embodiment thereof, reference is now made to the following specfication in connection with the accompanying drawings, in which:

`Fig. 1 is an elevation of the head portion of a sole rounding machine of common type provided with an embodiment of my invention.

Fig. 2 is a longitudinal central sectional View of the top sole clamping member which I employ.

Fig. 3 is a bottom plan View thereof.

ig. 4 is a perspective View of a sole after it has been rounded, and

Fig. 5 is a perspective view thereof in position on a shoe.

In Fig. l of the drawing a common type of sole rounding machine is illustrated, which comprises a frame 10 having a top clamping yoke 12 and a bottom clamping member 14, the latter carrying the usual wooden sole pattern 16 which serves as a guide for the rounding knife 18.

According to my invention the metal pattern top clamp comprises a fore-part section 20 and a heel part section 22, said sections being of uniformthickness and being separated at a t'ansverse line approximately corresponding in position to the heel breast line. The face 21 at the edge of fore part section, at its shank or rear end is inclined rearwardly, as it extends upward from the bottom side thereof, and the face 23 at the front edge of the heel part section 22 is also inclined rearwardly from its bottom side.

A block 24 is mounted at its upper end in the yoke 12 and depends therefrom in osition to support the toe end of the clamp section 20, and a block 26 is similarly supported by said yoke in position to support the shank end of said section. A in 28 is fixed in the lower end of block 26 an a spring pressed pin 30 is mounted on a pivot 32 in the block 24 and the lower end portions of said pins 28 and 30 depend below the bottom faces of said blocks to approximately the same extent, said bottom facesbeing disposed in the same horizontal plane. The pin 28 is 'notched at its side towards thefront to provide a shoulder 29 and the pin 30 is slightly recessed to .form a shoulder 31 at its rear side, and the forepart section 20 is provided with recessed openings to receive the pins 28 and 30. To attach the section 20, its toe portion is placed on the pin 30 and then it is pushed against the pin so as to swng the latter sufiiciently to permit the shank portion of the section to be passed onto pin 28, so that the supporting shoulders engage the spring 34:, w ich presses against pin 30, acting to hold the shoulders of thepms engaged with the section and hold the latter in position.

The block 26 has an arm 36, which is extended horizontally therefrom for a suitable distance, and then is extended reversel and obliquely downward and is terminate in a horizontal bottom face which is in the plane of the bottom faces of the blocks 24 and 26. The section 22 is Secured to said arm 36 against its bottom face in a manner similar to that described in reference to section 20, said arm being provided with a notched fixed pin 38 and a pivoted spring pressed pin 40, which engag .the section 22 correspondingly locate o jthat the section may be attache ner ;similar to that already described; v

When the sections 20, 22. are sup ,ortedin position on the lower ends of bloc i 26 and arm 36, as best shown in Fig. 2, the'f aces 21 and 23 thereon, respectively, will be parallel and separated suificiently to provide a slot `of substantial width between' the sections which extends obliquel Upward and rearward from the bottom aces thereof.

Cut soles, as usually supplied the shoe manufacturer, or as cut out from whole stock initially, are somewhat larger than when finally rounded, and, when the advantages of a machine embodying m invention' are to be Secured, the tongue which is to .form

' the heel breast coverin is formed by splitting the heel portion o the sole before it is rounded. i

When a sole, as w, having a tongue, as y, split from its heel portion, is to be rounded on the machine, its flesh side is placed on the wooden pattern 16, so that its gi'ain side will be next the top clamp, and, as it is placed in position, the tongue will be turned up from the sole sufiiciently to permit the same to be passed edgewise through the slot between faces 21, 23, so that it extends into the space enclosed by the opposite portions ing section 22 of the reversely extending arm 36, as shown in Fig. 2.

As thus arranged the surface formed by splitting off the tongue may then be engaged by the clamping section 22, and the forepart portion will be-engaged by the section 20 from the line at which the tongue extends from the sole, so that the sole will be securely clamped throughout practically its entire length, the fact that it is not clamped for a distance slightly more than the thickness of the tongue being immaterial.

As the tongue is supported above the sole during the rounding operation, it will not be engaged by the knife and the heel portion of the sole will be reduced to the required size without reducing the width of the tongue at any point, except that the tongue may slightly slit at the point where it extends from the sole, but usually the splitting operation is carried for a substantial distance beyond the breast line, to provide for all contingencies, and is cemented back onto the sole, beyond the heel breast, s'o that, under all conditions, the

tongue portion which is extended onto the of different sizes to be employed, but it is usually unnecessary to :employ a heel-clampof more than one size, but forepart clampin sections 20 of two or more sizes will usually %e em loyed, and substitutions may be readily ma e;

I claim:

1. A sole clamping member for a sole rounding machine, forepart and heel part sections, and means for supporting said sections in position to permit a tongue split from the heel end of the sole to extend between their adj acent ends.

2. A sole clamping member for' a sole rounding machine, comprising a forepart section and a heel part section, said sections terminating at their rear and front ends, respectively, in transverse faces located adjacent the position of the heel breast line, and means for supporting said sections with their said faces in proximity and sufliciently spaced apart to permit a tongue split from the heel end of the sole to pass therebetween.

3. A sole clamping member for a sole rounding machine, comprising a forepart section and a heel part section, said sections terminating at their rear and front ends, respectively, in transverse faces located adjacomprising independent cent the position of the heel breast line, said faces being arranged to eXtend obliquely rearing said sections in'sufliciently spaced relation to permit a tongue split from the heel end of the sole to be extended between their adjacent ends, when their faces are engaged with the sole, said supporting means being arranged to provide a recess over the heel section to receive the tongue' While the sole portion the-rebeneath is. clamped.

5. In a sole rounding machine, a sole clamping member comprisinq a forepart sec tion and a heel part section, each having a clamping face on its under side, said sections terminating at the front and rear ends, respectively, thereof, at a transverse line adjucent a positioh corresponding to the heel breast line of the sole, a. depending support to the lower end of which said forepart section is connected, and an arm extending hcri zontally from said support and then reversely and obliquely downward and having said heel part section connected thereto, said sections being supported with their adjacent ends suflicently spaced to permit a tongue split from the sole' heel portion to extend between said ends and above the oblique portion of said arm.

In testimony whereof, I have signed my i name to this specification.

ANTHONY LABRIE. 

